Growth · alternatives · 2026

24 alternatives to smtp relay service

best smtp service provider

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. smtp relay service launched in 2023; newer entries below may have overtaken it.

1
SMTPBOXES▲4
SMTP Service for Everything ! +Free Platform
2021 · agententoto.it.com · its alternatives →
2
email marketing service▲1
buy smtp server unlimited buy smtp relay..
2021 · massmailservers.net · its alternatives →
3
Relay: Email API with Your Own SMTP▲5
Relay Beta: Own SMTP. Ultra-fast email API.
Nov 2025 · relay.voidvalue.com · its alternatives →
4
Relay▲92
One-tap customer experience for the service industry
2020 · its alternatives →
5
Firefox Relay▲252
Hide your real email address to help protect your identity.
2021 · relay.firefox.com · its alternatives →
6
Gmail Transactional Email Relay by GMass▲79
A free service to send transactional emails through Gmail
2022 · gmass.co · its alternatives →
7
Relay Channel Manager▲63
Manage hundreds of Slack customer channels effortlessly
2023 · relay.fyi · its alternatives →
8
Tipimail by Sarbacane▲65
SMTP server & email API embed in an intuitive interface
2020 · tipimail.com · its alternatives →
9
What Email Service Should I Use?▲256
Answer 8 questions to find the best email service for you
2017 · whatemailserviceshouldiuse.com · its alternatives →
10
Relay▲428
A diverse, context-rich second brain for SaaS startups
2022 · gorelay.co · its alternatives →
11
SMTP Tunnel – A SOCKS5 proxy disguised as email traffic to bypass DPI▲140
A fast SOCKS5 proxy that tunnels your traffic through what looks like normal SMTP email, bypassing Deep Packet Inspection firewalls. How it works: - Client runs a local SOCKS5 proxy (127.0.0.1:1080) - Traffic is sent to server disguised as SMTP (EHLO, STARTTLS, AUTH) - DPI sees legitimate email session, not a VPN/proxy Features: - One-liner install on any Linux VPS - Multi-user with per-user secrets and IP whitelists - Auto-generated client packages (just double-click to run) - Auto-reconnect on connection loss - Works with any app that supports SOCKS5 Tech: Python/asyncio, TLS…
Jan 2026 · github.com · its alternatives →
12FS
Fake SMTP server as a service▲149
2017 · develmail.com · its alternatives →
13
VPS Mail Servers - Dedicated SMTP Server▲2
buy smtp server unlimited smtp relay emails using vps
2021 · massmailservers.net · its alternatives →
14
Super Send 2.0▲157
Automate cold outreach - email, Linkedin & Twitter
2023 · supersend.io · its alternatives →
15
Straight2Spam – Send your email right to someone's spam folder▲318
Wanna send an email straight to someones spam
2020 · straight2spam.com · its alternatives →
16
Easymailing▲146
User-friendly email marketing solution
2023 · easymailing.com · its alternatives →
17
BeeMail▲61
Awesome emails for your brand
2022 · its alternatives →
18
Relay by Puppet▲58
Easy workflow automation for cloud infrastructure
2021 · puppet.com · its alternatives →
19
Adcrux▲77
Email service provider and SMTP aggregator
2021 · adcrux.io · its alternatives →
20
MailSlurp▲103
End-to-end email testing made easy
2018 · mailslurp.com · its alternatives →
21
Hiver 2.0▲131
Shared inbox management for teams
2019 · hiverhq.com · its alternatives →
22
Helpmonks▲87
The collaborative email platform for your team
2015 · helpmonks.com · its alternatives →
23
ZeroSMTP▲1
Lightweight and secure self-hosted SMTP relay
Aug 2026 · docs.msgwing.com · its alternatives →
24
Go Mail Merge▲98
The easiest way to manage your email campaigns for Gmail
2021 · gomailmerge.com · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →