SMTP2GO alternatives

Reachkit makes a cold email tool, and I’ve kept it off this list: it doesn’t relay the app, Outlook, printer and scanner mail that SMTP2GO carries. I checked every price below on the vendor’s own pages in October 2026.

Pick an SMTP2GO alternative by what you want to change:

• The same $15 and $75 price points, plus inbound mail: Mailgun, which also includes a dedicated IP at 100,000 emails.
• A longer message history: Postmark, which keeps 45 days of activity on every plan.
• More mail for the money up to 100,000 a month: Mailtrap, where Basic covers 100,000 emails for $30.
• A free plan three times the size, with inbound included: Resend, free for 3,000 emails a month.
• A paid plan under $15: MailerSend Hobby, $7 for 5,000 emails.
• Small or uneven app mail you’d rather prepay: ZeptoMail, $2.50 per 10,000, for transactional mail only.
• 100,000 a month on shared IPs: SendGrid Essentials, $34.95.
• Millions a month: Amazon SES, from $0.10 per 1,000.

A new provider won’t free you from consent rules: all eight require opt-in recipients or ban bought lists, and each can suspend accounts that break its policy.

Every entry below sends through an API or SMTP relay, as SMTP2GO does. If your printers or scanners use SMTP2GO’s IP Authentication instead of a username and password, check how each device would log in to the new provider first.

Mailgun, part of Sinch since 2021, sends app email over an HTTP API or SMTP from US or EU data centers. Its inbound routes forward mail sent to your domain or post it to your app, a job SMTP2GO leaves to your mailbox.

Price (October 2026): the free plan sends 100 emails a day from one domain, with no card. Basic is $15 for 10,000, and extra mail costs $1.80 per 1,000. Foundation is $35 for 50,000 or $75 for 100,000, and Scale runs from $90 for 100,000 to $1,250 for 2.5 million. Foundation and Scale start with a free month, and every plan bills monthly.

Strengths:

• About 3,000 free emails a month, three times SMTP2GO’s allowance, and Basic already includes 5 inbound routes.
• At 100,000 emails, Foundation costs $75 with a dedicated IP, the same as SMTP2GO Professional.

Drawbacks:

• Basic allows one user, one sending domain and a day of logs. Subaccounts are kept for contract plans.
• Support is by ticket below Scale, so phone and chat start at $90. On Capterra, several reviewers say Mailgun shut their account with no warning.

Versus SMTP2GO: the entry prices match, but SMTP2GO charges less for extra mail on the $15 plans ($1.20 against $1.80) and for extra dedicated IPs ($19 against $59), and it sells yearly plans with two months free. Trustpilot shows 4.1 for Mailgun from about 1,550 reviews. More in the Mailgun profile and Mailgun alternatives.

Postmark, owned by ActiveCampaign since 2022, delivers password resets, receipts and other app email through its API or SMTP, with opted-in newsletters on a separate Broadcast stream.

Price (October 2026): Postmark’s free Developer tier allows 100 emails a month, meant for trying the integration. At 10,000 emails, Basic costs $15, Pro $16.50 and Platform $18. Basic costs $55 for 50,000 and $115 for 125,000.

Strengths:

• 45 days of message activity on every plan, where SMTP2GO’s paid plans keep 30 days of reports.
• Platform, at $18 for 10,000, has no cap on users or domains. Inbound processing starts on Pro.

Drawbacks:

• Postmark approves every account by hand, and until then you can only send to your own verified domains. It says approval takes under 24 hours on weekdays, though one Trustpilot reviewer waited a week. Its Trustpilot profile holds 1.9 from 49 reviews.
• Device settings may need changes. Postmark’s SMTP listens on ports 25, 2525 and 587, not 465, and won’t take a message over 10 MB with its attachments or one addressed to more than 50 people.

Versus SMTP2GO: both charge $15 for 10,000, but at 100,000 Postmark’s next tier is 125,000 for $115, against $75 with a dedicated IP at SMTP2GO. Postmark sells dedicated IPs from 300,000 a month at $50. It has no yearly plan, and its terms for accounts opened since December 2024 offer no refund window, where SMTP2GO refunds within 30 days. See the Postmark profile and Mailgun vs Postmark.

Mailtrap comes from the product studio Railsware and began as a sandbox that traps test emails before they reach real people. Its Email API/SMTP product now delivers live mail too.

Price (October 2026): the free plan sends 4,000 emails a month, up to 150 a day, but Mailtrap’s terms tie “commercial usage” to a paid subscription. On Basic, 10,000 emails cost $15, 50,000 cost $20 and 100,000 cost $30, with extra mail at $1.00 per 1,000. Business, from $85 at 100,000, includes a dedicated IP with automatic warm-up. Yearly billing for sending goes through sales.

Strengths:

• 100,000 emails for $30 on shared IPs, well under SMTP2GO Professional’s $75.
• Incoming mail is handled on every plan, Free included.

Drawbacks:

• On Basic, logs last five days, and the plan stops at 3 users and 5 domains. Free and Basic get email support on weekdays; Business adds 24/7 live chat, and no phone line is listed.
• Trustpilot shows 2.8 from 12 reviews. Its one-star reviews mostly concern blocked sending or suspended accounts, and most of Mailtrap’s replies point to its consent checks.

Versus SMTP2GO: both start at $15. Mailtrap is cheaper at 50,000 and 100,000 without a dedicated IP, and $10 more with one ($85 against $75). SMTP2GO keeps the phone support and an unlimited team on its $15 plan. G2 rates Mailtrap 4.8. Mailtrap profile

Resend grew out of React Email, a 2022 open-source project for building emails in React, and went through Y Combinator in 2023 as a sending platform. Code sends through its API or SMTP, and marketing email is a separate plan.

Price (October 2026): free for 3,000 emails a month, up to 100 a day, with no end date. Pro costs $20 for 50,000 or $35 for 100,000. Scale runs from $90 for 100,000 to $1,150 for 2.5 million. Overage is opt-in, $0.90 per 1,000 on Pro. There’s no annual plan or yearly discount. A dedicated IP costs $30 a month on Scale, for senders above 3,000 a day.

Strengths:

• Three times SMTP2GO’s free allowance, with inbound mail and 30 days of logs on every plan, Free included.
• 100,000 emails for $35 on Pro.

Drawbacks:

• Support is by ticket, with Slack and an urgent-response SLA from Scale. There’s no phone or live chat.
• Strict account rules: Resend wants bounces kept below 4% and complaints below 0.08%. Its policy warns that breaking them can end with the account shut “without warning”, where its quotas page talks of “a temporary pause in sending”. Of 22 Trustpilot reviews (2.3 overall), six describe paid accounts suspended.

Versus SMTP2GO: an IT team gives up a phone line, and Pro allows 10 custom domains where SMTP2GO Starter sets no limit. A dedicated IP at 100,000 means Scale plus $30, so $120 against $75. Resend profile

MailerSend is made by the people behind MailerLite. It takes app email through a REST API or SMTP relay, and inbound routes come with every plan. Like SMTP2GO, it also sells SMS.

Price (October 2026): the free plan sends 500 emails a month, at most 100 a day, once MailerSend approves the account and a card is on file. Hobby is $7 a month (5,000 emails) and Starter $35 (50,000). Professional, $110 for 50,000, raises domains and users to 1,000 per the help center (the pricing table says unlimited). A pricing FAQ answer prices 100,000 emails on Starter at $68. Paying yearly saves 10%. Extra mail costs $1.50 per 1,000 on Hobby and $1.30 above it.

Strengths:

• At $7, Hobby costs less than half of SMTP2GO Starter for anyone sending 5,000 a month or fewer.
• Its Trustpilot score is 4.2 across 230 reviews, and the company has responded to 77% of the critical ones.

Drawbacks:

• Hobby keeps 24 hours of activity and allows one sending domain. Starter keeps seven days and ten domains.
• Suspensions are a recurring complaint: 8 of the 20 reviews on its first page of one- and two-star Trustpilot reviews in October 2026 were about one.

Versus SMTP2GO: MailerSend costs less up to 10,000 emails. Past that, SMTP2GO’s paid plans keep longer reports than Hobby or Starter, set no domain cap and include phone support, which MailerSend’s plans don’t list. A dedicated IP costs $50 a month at MailerSend, on request: on Professional and Enterprise per its help center, Enterprise only per its pricing page. MailerSend profile

ZeptoMail is Zoho’s service for app-triggered email, renamed Zoho CPaaS in September 2026. Mail goes out through SMTP or a REST API, and Zoho’s terms allow only “transactional email communications” on the email channel.

Price (October 2026): you buy credits instead of a plan. Each credit costs $2.50, covers 10,000 emails and stays valid for six months, and a new account’s first one costs nothing but lapses after a month. There’s no monthly or seat fee. A dedicated IP is $30 a month on a yearly bill, in some Zoho data centers only.

Strengths:

• About $0.25 per 1,000 emails: 10,000 cost $2.50 against $15 on SMTP2GO Starter, and 100,000 cost $25.
• No plan to pay in a quiet month, which helps when volume swings.

Drawbacks:

• Newsletters and other marketing mail aren’t allowed; Zoho points them to Zoho Campaigns. No inbound processing is listed.
• A person at Zoho checks each new account, which Zoho puts at 2 business days, and until then sending is capped at 100 a day; a forum user and a Capterra reviewer describe longer waits. Credits expire after six months, even though the homepage promises “no unused credit write-offs”.

Versus SMTP2GO: much cheaper per email, but narrower: SMTP2GO also carries opted-in marketing mail as well as Outlook and device mail. ZeptoMail’s support draws complaints; one Capterra review from May 2025 is headed “Cheap service, horrible support”. On G2 it rates 4.8, from only 16 reviews. ZeptoMail profile

SendGrid belongs to Twilio, and its website has redirected to twilio.com since February 2026. Two products matter here: the Email API, used over REST or SMTP relay, and Marketing Campaigns, a newsletter tool billed separately.

Price (October 2026): Twilio’s changelog retired the free plans in 2025, though the pricing page still says “Start with our free plan”. New accounts get a 60-day trial at 100 emails a day, no card needed. On shared IPs, Essentials charges $19.95 monthly for 50,000 emails and $34.95 for 100,000. Pro, which adds a dedicated IP, goes from $89.95 (100,000) up to $1,099 (2.5 million), and each further IP is $30 a month.

Strengths:

• 100,000 emails for $34.95, less than half of SMTP2GO Professional, if you don’t need your own IP.
• Inbound Parse comes with every paid plan, and Pro adds up to 1,000 teammates, 2,500 address validations and a phone callback.

Drawbacks:

• Essentials allows one teammate and keeps three days of activity.
• Reviews of account handling are harsh: 1.1 on Trustpilot across 613 reviews, and of 53 Capterra reviews that bring up account restrictions, Capterra’s summary counts 79% as negative.

Versus SMTP2GO: with a dedicated IP, SMTP2GO costs less at 100,000 ($75 against $89.95) and charges $19 for each extra IP against $30. SMTP2GO also keeps a free plan and a team with no seat cap from $15. More in SendGrid alternatives and Mailgun vs SendGrid.

Amazon SES is the sending service inside Amazon Web Services. Apps and servers send through its API or an SMTP endpoint, and incoming mail is handled by receipt rules or Mail Manager.

Price (October 2026): SES has had plans since July 21, 2026, and Essentials, the one every new account lands on, charges $0.16 per 1,000 emails. Switching to à la carte, open to any account, brings that to $0.10 per 1,000, plus $0.12 per GB of attachments such as scans. Your own standard IP adds $24.95 monthly. The July announcement on AWS’s blog ended the SES free tier for new customers, but the SES FAQ still describes one.

Strengths:

• 100,000 emails with a dedicated IP cost $34.95 à la carte, and a million cost $100 à la carte or $160 on Essentials (my math, no attachments).
• The rules are public: AWS reviews an account at 5% bounces or 0.1% complaints, where SMTP2GO’s terms give no figures.

Drawbacks:

• In every region you begin in AWS’s sandbox, which allows 200 messages in 24 hours and only to addresses you’ve verified. AWS promises a first answer to a production request within 96 hours.
• It’s built for developers. On G2, where it rates 4.3 from about 200 reviews, difficult setup and poor customer support show up among the cons. Capterra gives it 4.7 from 123.

Versus SMTP2GO: the lowest price per email on this page. In return, DNS records, sandbox exits and AWS permissions become your team’s work. See Amazon SES alternatives and Amazon SES vs SendGrid.

Start from the job SMTP2GO does for you today:

• Printers, scanners and Outlook for many clients. Moving may not pay. Unlimited users and sender domains, subaccounts, IP Authentication and a phone line on a $15 plan are hard to match here. If you still move, Mailgun Foundation ($35, up to 1,000 domains) and Postmark Platform ($18 for 10,000, no user or domain cap) come closest.
• App email under 10,000 a month. Resend’s free 3,000, MailerSend Hobby at $7, or ZeptoMail at $2.50 per 10,000 if it’s all transactional.
• 50,000 to 100,000 a month on shared IPs. Mailtrap Basic ($20 or $30), Resend Pro ($20 or $35) or SendGrid Essentials ($19.95 or $34.95).
• A dedicated IP at 100,000. SMTP2GO Professional and Mailgun Foundation, both $75. Mailtrap Business is $85, SendGrid Pro $89.95, SES à la carte about $35.
• Inbound mail. Mailgun, Mailtrap, Resend, MailerSend, SendGrid, SES, and Postmark from Pro.
• Millions a month. Amazon SES.

To switch, add the new provider’s DNS records next to SMTP2GO’s, move one app or one group of devices first, and watch bounces before moving the rest.

I’d leave SMTP2GO only for a reason you can put a price on. If you relay printers and Outlook for a list of clients, I’d probably stay: few providers here put a phone line, subaccounts and unlimited sender domains on a $15 plan. If you need inbound mail or a larger free plan, try Mailgun or Resend. If the bill between 50,000 and 100,000 is the issue, Mailtrap, Resend or SendGrid cost less on shared IPs, and at millions SES does. If a suspension pushed you out, every provider here enforces opt-in too.

If you were sending to prospects, none of these allow it. Cold outreach belongs on separate lookalike domains and Google or Microsoft mailboxes of its own, which is what I built Reachkit to set up (how that works).

Related: SMTP2GO profile, Mailgun alternatives and Postmark alternatives.