Best Outlook Alternative for Agencies: How Sparklead Scale Cold Outreach with Aerosend

Overview

Founded by Alexan Zartarian, Sparklead is a B2B lead generation agency that helps companies across industries generate qualified sales appointments through cold email outreach. The team runs campaigns for clients in multiple sectors, focusing on scalable systems that drive predictable meetings and revenue growth.

When Sparklead first started, Alexan handled everything directly, experimenting with both Google and Outlook setups, along with more than ten different resellers across both platforms. While a few worked decently, most could not deliver consistent results or maintain domain health, which led to frequent deliverability issues and interruptions in outreach performance.

The Challenge

As the cold email landscape evolved, deliverability became a growing concern. With stricter filters and domain reputation risks in 2025, Sparklead needed a more reliable and stable solution that would allow them to run multiple campaigns confidently without worrying about spam or bounce issues.

The Switch to Aerosend as an Alternative to Outlook and Google

After exploring several options, Alexan decided to test Aerosend. The setup was quick, and within days, Sparklead was running campaigns using Aerosend’s inboxes and infrastructure. The transition was smooth and immediately noticeable in terms of consistency and ease of execution.

The Results

Over the next few months, Sparklead ran dozens of campaigns using Aerosend and saw a clear difference. Deliverability issues disappeared, campaigns ran smoothly, and inbox placement became consistent across all clients. With domain health no longer a daily concern, Alexan and his team could focus entirely on optimizing messaging and driving qualified meetings.

“Deliverability is a major concern in 2025, and knowing that I do not have to worry about it anymore with Aerosend is a good thing. All our campaigns have been flowing really smoothly – Alexan Zartarian, Founder, Sparklead”

About Aerosend

Aerosend offers private infrastructure for outbound campaigns, helping you send high-deliverability emails that consistently avoid spam filters while improving inbox placement and maintaining a strong sender reputation. It provides pre-warmed domains and inboxes, real-time alerts on burn rates, blacklists, and domain health, along with seamless integrations with tools like SmartLead to drive stronger deliverability and higher response rates. Try Aerosend today.